if you have diabetes, how well you're managing your blood sugar. This article provides an A1c chart to help you understand ...

C. Ronald Kahn, M.D. President and Director, Joslin Diabetes Center What is the A1c blood test? The hemoglobin A1C test is a measure of what we call long term glucose control. The way this works ...

Medicare may cover an A1c test if a doctor or healthcare professional orders it. They may request this test if you are at risk of developing diabetes, and the results could indicate prediabetes.